<html class="reftest-wait">
<head>
<script>
    
function boom()
{
  var a = document.getElementById("a");
  var b = document.getElementById("b");
  var x = document.getElementById("x");

  a.parentNode.insertBefore(x, a);
  x.parentNode.removeChild(x);
  b.parentNode.removeChild(b);
  
  document.documentElement.removeAttribute("class");
}

</script>
</head>


<body onload="setTimeout(boom, 30);">
    
  <table>
    <tr>
      <td id="x">X</td>
    </tr>
  </table>
                                                        
  <table border="1" style="border-collapse: collapse;">
    <tr>
      <td id="a">A</td>
    </tr>
    <tr>
      <td id="b" colspan="2">B</td>
    </tr>
  </table>

</body>

</html>
